/**
 * Copyright (c) 2011-2015, Mobangjack 莫帮杰 (mobangjack@foxmail.com).
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.wechat.ext;

import com.wechat.api.AccessToken;
import com.wechat.api.AccessTokenApi;


/**
 * LocalAccessTokenMgr
 * @author 帮杰
 *
 */
public class LocalAccessTokenMgr extends AccessTokenMgr {

	private AccessToken accessToken;
	
	public LocalAccessTokenMgr() {
		super();
	}

	public LocalAccessTokenMgr(String appId,String appSecret) {
		super(appId, appSecret);
	}
	
	@Override
	public String getAccessToken() {
		if (accessToken==null||accessToken.isExpired()) {
			accessToken = AccessTokenApi.getAccessToken(appId, appSecret);
		}
		return accessToken.toString();
	}

}
